In the context of toxicology, "3 Factor PCC" refers to a therapeutic intervention known as Prothrombin Complex Concentrate (PCC) that contains three specific blood clotting factors: II, IX, and X. These factors are crucial in reversing anticoagulation effects in patients who have been exposed to certain toxic agents or are experiencing severe bleeding due to anticoagulant therapy. PCC is used primarily in the management of bleeding associated with the use of vitamin K antagonists like warfarin.